Rover 200 (1989 - 1998), 400 (1990 - 1998) Front Anti Roll Bar Mounts 23mm 23mm - PFF63-404-23 Rover 220 Turbo front roll bar size is 23mm. For KV6 and M47R models ARB bushes are 24mm in diameter and K1.8 models are 23mm in diameter. - NOTE: Price is for CAR KIT, NOT per bush… Powerflex price their bushes individually, but we have combined the quantities to make it simple!